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This section needs expansion. You can help by adding to it.(October 2015)

On September 25, 2006, these stations switched to the new MTV Tr3́s network (now simply known as Tr3́s since July 2010), which was created as a result of Viacom's acquisition of Más Música. Low-power analog station KMMK-LP, channel 14 in Sacramento used to simulcast with KMUM and KMMW.

In 2014, Serestar Communications agreed to purchase both KMUM & KMMW from Viacom for a disclosed amount. The sale of both stations were finalized on September 25, 2014. Prior to the sale, both of the stations dropped the MTV Tres affiliation & switched to Telemundo. After the sale, they became sister stations to KCSO-LD, which is also a Telemundo affiliate.